ABAP TYPES RANGES Statement syntax and functionality in SAP

TYPES - RANGE OF

Short Reference

ABAP Syntax_6 TYPES dtype {TYPE RANGE OF type}|{LIKE RANGE OF dobj}
[INITIAL SIZE n].

What does it do? Derives a table type for a
ranges table . A ranges table is a standard table with a standard key and a specially structured row type whose internal definition can be displayed as follows in ABAP syntax:
TYPES: BEGIN OF linetype,
sign TYPE c LENGTH 1,
option TYPE c LENGTH 2,
low {TYPE type}|{LIKE dobj},
high {TYPE type}|{LIKE dobj},
END OF linetype.
The additions TYPE and LIKE determine the data type of the components low and high :
type can be a non-generic data type from ABAP Dictionary, a non-generic public data type of a public data type or global class, a non-generic data type local to a program, or any ABAP type from the table of predefined ABAP types . The generic ABAP types c , n , p , and x are implicitly extended to the standard length without decimal places from the table of predefined ABAP types.

dobj can be a data object visible at this point, whose type is used for both components. Generically typed formal parameters cannot be specified for dobj within a procedure
.
The addition INITIAL SIZE is synonymous with the definition of normal internal table types .

Latest notes: A ranges table has the same structure as a selection table , and can be used to pass values to the
selection screens of an executable program called using SUBMIT in a comparison expression with the comparison operator IN or in a similar expression in a WHERE condition in Open SQL .
The sign and option columns of a range table declared using RANGE OF are not related to data types in ABAP Dictionary. For a ranges table defined in ABAP Dictionary, these columns are based on the data elements DDSIGN and DDOPTION .

ABAP TYPES RANGES Statement syntax, information and example SAP source code